Aerosol Generation Device with Reduced Spitting Effect

Abstract

An aerosol generation device includes a reservoir storing an aerosol-forming liquid having first and second mixed compounds having first and second boiling points, a heater for vaporizing the aerosol-forming liquid mixed with air in an aerosol chamber to generate an aerosol, a power source storing electrical energy, and a controller arranged, during each inhalation phase of a vaping session, for controlling supply of electrical power to the heater according to a chosen profile in which the electrical power varies over time depending on the first and second boiling points in order to control a vaporization ratio of the first and second compounds in the aerosol chamber.

1 . An aerosol generation device comprising:
 a reservoir storing an aerosol-forming liquid comprising at least first and second mixed compounds having respectively first and second boiling points,   a heater for vaporizing said aerosol-forming liquid mixed with air in an aerosol chamber to generate an aerosol,   a power source storing electrical energy, and   a controller arranged for controlling a supply of electrical power to said heater during each inhalation phase of a vaping session,   wherein said controller is arranged for controlling said supply of electrical power according to a chosen profile in which said electrical power varies over time depending on said first and second boiling points in order to control a vaporization ratio of said first and second compounds in said aerosol chamber.   
     
     
         2 . The aerosol generation device according to  claim 1 , wherein said controller is arranged for controlling said supply of electrical power according to a chosen profile that allows minimizing said vaporization ratio of said first and second compounds in said aerosol chamber. 
     
     
         3 . The aerosol generation device according to  claim 1 , wherein said controller is arranged for controlling said supply of electrical power according to a chosen profile comprising a first phase having a first duration at a first electrical power, a second phase having a second duration at a second electrical power greater than said first electrical power, and a third phase having a third duration at a third electrical power greater than said second electrical power. 
     
     
         4 . The aerosol generation device according to  claim 3 , wherein said first, second and third durations are equal to a chosen first value. 
     
     
         5 . The aerosol generation device according to  claim 4 , wherein said chosen first value is between 150 ms and 250 ms. 
     
     
         6 . The aerosol generation device according to  claim 1 , wherein said controller is arranged for controlling said supply of electrical power according to a chosen profile comprising a first phase having a first duration at a first electrical power, a second phase having a second duration at an electrical power equal to zero, a third phase having a third duration at said first electrical power, a fourth phase having a fourth duration at an electrical power equal to zero, and a fifth phase having a fifth duration at said first electrical power. 
     
     
         7 . The aerosol generation device according to  claim 6 , wherein said first, third and fifth durations are equal to a chosen second value. 
     
     
         8 . The aerosol generation device according to  claim 7 , wherein said chosen second value is between 70 ms and 130 ms. 
     
     
         9 . The aerosol generation device according to  claim 8 , wherein said second and fourth durations are equal to a chosen third value. 
     
     
         10 . The aerosol generation device according to  claim 9 , wherein said chosen third value is between 10 ms and 50 ms. 
     
     
         11 . The aerosol generation device according to  claim 1 , wherein said controller is arranged for controlling said supply of electrical power according to a chosen profile comprising a phase having a chosen duration during which said electrical power strictly increases. 
     
     
         12 . The aerosol generation device according to  claim 11 , wherein said controller is arranged for controlling said supply of electrical power according to a chosen profile comprising a phase during which said electrical power varies as a logarithmic function. 
     
     
         13 . The aerosol generation device according to  claim 12 , wherein said chosen duration is between 550 ms and 650 ms. 
     
     
         14 . The aerosol generation device according to  claim 1 , wherein said power source is a rechargeable battery. 
     
     
         15 . A method for controlling aerosol generation by an aerosol generation device comprising i) a reservoir storing an aerosol-forming liquid comprising at least first and second mixed compounds having respectively first and second boiling points, ii) a heater for vaporizing said aerosol-forming liquid mixed with air in an aerosol chamber to generate an aerosol, iii) a power source storing electrical energy, and iv) a controller arranged for controlling a supply of electrical power to said heater during each inhalation phase of a vaping session,
 wherein the method comprises a step in which said controller controls said supply of electrical power according to a chosen profile in which said electrical power varies over time depending on said first and second boiling points in order to control a vaporization ratio of said first and second compounds into said aerosol chamber.